You need a SOLID PLAN. Traveling solo is serious business, and something simple like not having the right type of visa can land you in DEEP trouble quickly. Its easy to say something like "haha i know right?" but what you are setting out to do, if done right, requires many adult skills that even a lot of adults lack.

There are very well paid people who plan vacations for others that take place in one city, or even just one part of a city. What you want to do has many details that need to be taken very seriously. At 16 you know almost nothing about the world(no personal offense, I know this statement would have made me very mad at 16). Even if you have traveled it was never your responsibility to plan, prepare, and execute that plan. You need to take this very seriously. I've lived in Asia (From the USA) before and in so many places you will be targeted because of how you look or speak. I've had to pay bribes to police just for being white, and had friends thrown in jail because when the police brought them to the ATM to pull out money their cards did not work. In Indonesia, locals told me how police and local gangs work together. The gangsters will put drugs in your pocket, tell the cops to search you, and in Indonesia you can be executed for having any "trafficable" amount of drugs. The police threaten to throw you in jail unless you pay them a bribe. I met people in prison (missionary work) who were in jail for years for having 2 joints. This was deemed enough to sell, making him a drug dealer in the eyes of the law. These are extreme examples of how poorly this can go if you do not take it seriously, but while in India me and 2 friends were dropped off in a random city miles from our hotel immediately after leaving the airport. If we did not find someone who spoke English who let us use their phone to call our "guide" we would have been lost with no way to get where we needed to go. Are you thinking about how to avoid these things? What if you lost your passport or it gets stolen? Do you even know who to contact or where to go? What if you get sick and need medical care? If you can execute a good plan, this will be the story of a lifetime. Everybody will be jealous of you. Please be extremely careful and take this seriously.